For you granny knot tiers

[jaxsprat]

Wow, the price yikes enough to give this cheap old man a heart attack

[Hanr3]

Did you know the difference between a granny knot and a square knot?

Granny knot is left over right, left over right. OR Right over left, right over left.
Square knot is left over right, right over left. OR Right over left, left over right.

The difference is that a granny knot will come undone, a square knot will knot...
Practice with your shoes and garbage bags until you master the knot.